Weekly Extreme Sudoku Competition for Jan 1 to Jan 7

Number 537, Extreme
by Crosswords Ltd. January puzzle packs Now Out!. Thanks for supporting our site.
Future Puzzle - will be submitted on the relevant day
1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
    9            
6     1   7 9    
8   7 5         3
      7   4 1 2  
        1        
  4 6     8      
4         3 7   9
    2 9   6